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Allen Bradley

Allen Bradley 1757-SRM ControlLogix System Redundancy Module

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ManufacturerAllen Bradley

Part number1757-SRM

Module Type System Redundancy Module

System ControlLogix / ProcessLogix

Communication Fiber Optic (SC Connector)

Cable Type 62.5/125 μm Multimode

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12-month warranty

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Same-day dispatch

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Veteran-owned

CAGE: 9NK75

Enables Controller Redundancy Fiber Optic Synchronization Seamless Controller Switchover High-Availability Systems Two-Slot Module Design ControlLogix/ProcessLogix Compatible

Product description

The Allen Bradley 1757-SRM is a System Redundancy Module designed for ControlLogix and ProcessLogix platforms. It enables high-availability, redundant controller architectures by synchronizing a primary and secondary controller chassis through a fiber-optic link. This two-slot module supports multimode 62.5/125 μm fiber with SC connectors, ensuring seamless controller switchover for continuous process operation.

This module is critical for applications where uptime is paramount, such as in continuous process industries like petrochemicals, power generation, and manufacturing. By providing seamless failover, it minimizes downtime and ensures uninterrupted operation during controller failures, thus enhancing system reliability and availability.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Allen Bradley 1757-SRM and a wide selection of industrial automation components. We are committed to providing quality surplus parts at competitive prices, ensuring your operations run smoothly. Trust Stanlo Automation for your industrial redundancy and automation needs.

Technical specifications

Module Type	System Redundancy Module
System	ControlLogix / ProcessLogix
Communication	Fiber Optic (SC Connector)
Cable Type	62.5/125 μm Multimode
Slots	2
Backplane Current	0.160 A @ 24V DC

Common applications

Petroleum processing

Chemical plants

Power generation

High-availability process control

Mission-critical systems

Continuous manufacturing

Compatible systems

Compatible with Allen Bradley ControlLogix and ProcessLogix controllers. Requires identical configuration in both primary and secondary chassis.

Also known as

Allen Bradley ControlLogix Redundancy Module 1757-SRM Module AB System Redundancy

Replaces / compatible with

The 1757-SRM is designed for implementing redundancy within ControlLogix and ProcessLogix systems and may replace older redundancy solutions or be a direct replacement for other identical 1757-SRM modules.

Technical note

Expert tip

For reliable redundancy, the secondary controller chassis must have identical module configurations, including chassis size, power supply, and module revisions.

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Frequently asked questions

What type of fiber optic cable is used with the Allen Bradley 1757-SRM redundancy module?

The Allen Bradley 1757-SRM redundancy module utilizes a fiber optic link with SC-type connectors and supports 62.5/125 μm multimode fiber-optic cable for high-speed communication between redundant controller chassis.